Isolation and Identification of Five Lead Bio-Remediating Bacterial Strains
Journal of Plant Biochemistry & Physiology focused on articles related to Plant Biosystems, Plant Ecology, Plant production science, Plant signaling & behavior, virology, mycology, bacteriology, nematology, plant neurobiology.
Journal of Plant Biochemistry & Physiology has placed an article, Title: Isolation and Identification of Five Lead Bio-Remediating Bacterial Strains which deals with,
The present investigation was implemented to search for high efficient bacterial strains in bio-remediating the toxic influence of Lead chloride (Pb Cl2) on faba bean plants grown in sandy soil supplemented with various concentrations of Pb Cl2. Five strains were isolated from Al-Taif, Al-Baha and Al-Madinah Al-Munawrah governorates from the rhizosphere of cucumber, fig and tomato plants respectively, KSA. Regarding efficiency of these isolated strains in remediating PbCl2 in the nutrient broth medium, the absorbed quantities ranged from 189 to 417 mg/l while the whole amount recorded in control was 612 mg/l. The isolated bacterial strains were genetically identified as Bacillus amyloliquefaciens subsp. plantarum Trigo Core 1448, Bacillus amyloliquefaciens subsp. plantarum UCMB 5033, Bacillus subtilis strain CCM 1999, Serratia marcescens strain WW4 and Bacillus amyloliquefaciens CC178. Bacillus amyloliquefaciens subsp. plantarum UCMB 5033 revealed the highest efficiency in absorbing Pb that reached 417 mg/l against 612 mg/l for the controls. Bioremediation of Pb-polluted soil with Bacillus amyloliquefaciens significantly increased faba bean plant height, plant fresh weight, dry weight, plant N, P and K concentrations compared to the non-inoculated treatments.
Five Pb-tolerant bacteria strains were isolated and identified, two were isolated from the root rhizosphere soil cultivated with alfalfa plants at Al-Baha Serratia marcescens strain WW4 (B1) and Bacillus amyloliquefaciens CC178 (B2), one from the rhizosphere soil under fig plants at Al-Madinah Al-Munawarah B. subtilis strain CCm1999 (M) and two from the rhizosphere soil under tomato plants at Al-Taif Bacillus amyloliquefaciens subsp Plantarum Trigo Core 1448 (T1) and Bacillus amyloliquefaciens subsp. Plantarum UCMB 5033 (T2). Four of the isolates showed high Pb absorption percentages Bacillus amyloliquefaciens CC178 (B2), absorbed the highest Pb percentage 68.16%, seconded by Bacillus amyloliquefaciens subsp Plantarum Trigo Core 1448 (T1) with 60.62% Pb, then B. subtilis strain CCm1999 (M) with Pb percentage of 56.60%, then Serratia marcescens strain WW4 (B1) with 49.67%. The lowest Pb percentage absorbed was by the bacteria Bacillus amyloliquefaciens subsp. Plantarum UCMB 5033 (T2) that reached 30.88% compared to the control with 612 mg/L. So it can be said that all of these isolated Pb resistant strains are well efficient for bioremediation of Pb from contaminated sites. Enjoy reading this article on journal website.
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Journal of Plant Biochemistry and Physiology
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